40020712 has 16 divisors (see below), whose sum is σ = 76096800. Its totient is φ = 19728240.

The previous prime is 40020677. The next prime is 40020731. The reversal of 40020712 is 21702004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34662 + ... + 35797.

It is an arithmetic number, because the mean of its divisors is an integer number (4756050).

Almost surely, 2^40020712 is an apocalyptic number.

It is an amenable number.

40020712 is a deficient number, since it is larger than the sum of its proper divisors (36076088).

40020712 is a wasteful number, since it uses less digits than its factorization.

40020712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70536 (or 70532 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 40020712 is about 6326.1925357991. The cubic root of 40020712 is about 342.0542075197.

Adding to 40020712 its reverse (21702004), we get a palindrome (61722716).

It can be divided in two parts, 400 and 20712, that added together give a palindrome (21112).

The spelling of 40020712 in words is "forty million, twenty thousand, seven hundred twelve".